r19604: This is a massive commit, and I appologise in advance for it's size.

This merges Samba4 with lorikeet-heimdal, which itself has been
tracking Heimdal CVS for the past couple of weeks.

This is such a big change because Heimdal reorganised it's internal
structures, with the mechglue merge, and because many of our 'wishes' have been granted:  we now have DCE_STYLE GSSAPI, send_to_kdc hooks and many other features merged into the mainline code.  We have adapted to upstream's choice of API in these cases.

In gensec_gssapi and gensec_krb5, we either expect a valid PAC, or NO
PAC.  This matches windows behavour.  We also have an option to
require the PAC to be present (which allows us to automate the testing
of this code).

This also includes a restructure of how the kerberos dependencies are
handled, due to the fallout of the merge.

Andrew Bartlett
(This used to be commit 4826f1735197c2a471d771495e6d4c1051b4c471)

1 files changed, 240 insertions, 112 deletions

diff --git a/source4/heimdal/lib/asn1/parse.c b/source4/heimdal/lib/asn1/parse.c
index e498d8f965..29d13ed68d 100644
--- a/source4/heimdal/lib/asn1/parse.c
+++ b/source4/heimdal/lib/asn1/parse.c
@@ -1,7 +1,7 @@
-/* A Bison parser, made by GNU Bison 2.0.  */
+/* A Bison parser, made by GNU Bison 2.1.  */
 
 /* Skeleton parser for Yacc-like parsing with Bison,
-   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -15,8 +15,8 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.
@@ -36,6 +36,9 @@
 /* Identify Bison output.  */
 #define YYBISON 1
 
+/* Bison version.  */
+#define YYBISON_VERSION "2.1"
+
 /* Skeleton name.  */
 #define YYSKELETON_NAME "yacc.c"
 
@@ -142,6 +145,7 @@
      NUMBER = 344
    };
 #endif
+/* Tokens.  */
 #define kw_ABSENT 258
 #define kw_ABSTRACT_SYNTAX 259
 #define kw_ALL 260
@@ -277,6 +281,11 @@ struct string_list {
 # define YYERROR_VERBOSE 0
 #endif
 
+/* Enabling the token table.  */
+#ifndef YYTOKEN_TABLE
+# define YYTOKEN_TABLE 0
+#endif
+
 #if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
 #line 65 "parse.y"
 typedef union YYSTYPE {
@@ -293,8 +302,8 @@ typedef union YYSTYPE {
     struct memhead *members;
     struct constraint_spec *constraint_spec;
 } YYSTYPE;
-/* Line 190 of yacc.c.  */
-#line 298 "parse.c"
+/* Line 196 of yacc.c.  */
+#line 307 "parse.c"
 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
 # define YYSTYPE_IS_DECLARED 1
 # define YYSTYPE_IS_TRIVIAL 1
@@ -305,17 +314,36 @@ typedef union YYSTYPE {
 /* Copy the second part of user declarations.  */
 
 
-/* Line 213 of yacc.c.  */
-#line 310 "parse.c"
+/* Line 219 of yacc.c.  */
+#line 319 "parse.c"
 
-#if ! defined (yyoverflow) || YYERROR_VERBOSE
+#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
+# define YYSIZE_T __SIZE_TYPE__
+#endif
+#if ! defined (YYSIZE_T) && defined (size_t)
+# define YYSIZE_T size_t
+#endif
+#if ! defined (YYSIZE_T) && (defined (__STDC__) || defined (__cplusplus))
+# include <stddef.h> /* INFRINGES ON USER NAME SPACE */
+# define YYSIZE_T size_t
+#endif
+#if ! defined (YYSIZE_T)
+# define YYSIZE_T unsigned int
+#endif
 
-# ifndef YYFREE
-#  define YYFREE free
+#ifndef YY_
+# if YYENABLE_NLS
+#  if ENABLE_NLS
+#   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
+#   define YY_(msgid) dgettext ("bison-runtime", msgid)
+#  endif
 # endif
-# ifndef YYMALLOC
-#  define YYMALLOC malloc
+# ifndef YY_
+#  define YY_(msgid) msgid
 # endif
+#endif
+
+#if ! defined (yyoverflow) || YYERROR_VERBOSE
 
 /* The parser invokes alloca or malloc; define the necessary symbols.  */
 
@@ -325,6 +353,10 @@ typedef union YYSTYPE {
 #    define YYSTACK_ALLOC __builtin_alloca
 #   else
 #    define YYSTACK_ALLOC alloca
+#    if defined (__STDC__) || defined (__cplusplus)
+#     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+#     define YYINCLUDED_STDLIB_H
+#    endif
 #   endif
 #  endif
 # endif
@@ -332,13 +364,39 @@ typedef union YYSTYPE {
 # ifdef YYSTACK_ALLOC
    /* Pacify GCC's `empty if-body' warning. */
 #  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
-# else
-#  if defined (__STDC__) || defined (__cplusplus)
-#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
-#   define YYSIZE_T size_t
+#  ifndef YYSTACK_ALLOC_MAXIMUM
+    /* The OS might guarantee only one guard page at the bottom of the stack,
+       and a page size can be as small as 4096 bytes.  So we cannot safely
+       invoke alloca (N) if N exceeds 4096.  Use a slightly smaller number
+       to allow for a few compiler-allocated temporary stack slots.  */
+#   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2005 */
 #  endif
+# else
 #  define YYSTACK_ALLOC YYMALLOC
 #  define YYSTACK_FREE YYFREE
+#  ifndef YYSTACK_ALLOC_MAXIMUM
+#   define YYSTACK_ALLOC_MAXIMUM ((YYSIZE_T) -1)
+#  endif
+#  ifdef __cplusplus
+extern "C" {
+#  endif
+#  ifndef YYMALLOC
+#   define YYMALLOC malloc
+#   if (! defined (malloc) && ! defined (YYINCLUDED_STDLIB_H) \
+	&& (defined (__STDC__) || defined (__cplusplus)))
+void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
+#   endif
+#  endif
+#  ifndef YYFREE
+#   define YYFREE free
+#   if (! defined (free) && ! defined (YYINCLUDED_STDLIB_H) \
+	&& (defined (__STDC__) || defined (__cplusplus)))
+void free (void *); /* INFRINGES ON USER NAME SPACE */
+#   endif
+#  endif
+#  ifdef __cplusplus
+}
+#  endif
 # endif
 #endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
 
@@ -373,7 +431,7 @@ union yyalloc
 #   define YYCOPY(To, From, Count)		\
       do					\
 	{					\
-	  register YYSIZE_T yyi;		\
+	  YYSIZE_T yyi;				\
 	  for (yyi = 0; yyi < (Count); yyi++)	\
 	    (To)[yyi] = (From)[yyi];		\
 	}					\
@@ -423,7 +481,7 @@ union yyalloc
 #define YYUNDEFTOK  2
 #define YYMAXUTOK   344
 
-#define YYTRANSLATE(YYX) 						\
+#define YYTRANSLATE(YYX)						\
   ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
 
 /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
@@ -548,8 +606,8 @@ static const unsigned short int yyrline[] =
 };
 #endif
 
-#if YYDEBUG || YYERROR_VERBOSE
-/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
    First, the terminals, then, starting at YYNTOKENS, nonterminals. */
 static const char *const yytname[] =
 {
@@ -804,22 +862,6 @@ static const unsigned char yystos[] =
      154
 };
 
-#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
-# define YYSIZE_T __SIZE_TYPE__
-#endif
-#if ! defined (YYSIZE_T) && defined (size_t)
-# define YYSIZE_T size_t
-#endif
-#if ! defined (YYSIZE_T)
-# if defined (__STDC__) || defined (__cplusplus)
-#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
-#  define YYSIZE_T size_t
-# endif
-#endif
-#if ! defined (YYSIZE_T)
-# define YYSIZE_T unsigned int
-#endif
-
 #define yyerrok		(yyerrstatus = 0)
 #define yyclearin	(yychar = YYEMPTY)
 #define YYEMPTY		(-2)
@@ -849,8 +891,8 @@ do								\
       goto yybackup;						\
     }								\
   else								\
-    { 								\
-      yyerror ("syntax error: cannot back up");\
+    {								\
+      yyerror (YY_("syntax error: cannot back up")); \
       YYERROR;							\
     }								\
 while (0)
@@ -929,7 +971,7 @@ do {								\
   if (yydebug)							\
     {								\
       YYFPRINTF (stderr, "%s ", Title);				\
-      yysymprint (stderr, 					\
+      yysymprint (stderr,					\
                   Type, Value);	\
       YYFPRINTF (stderr, "\n");					\
     }								\
@@ -977,13 +1019,13 @@ yy_reduce_print (yyrule)
 #endif
 {
   int yyi;
-  unsigned int yylno = yyrline[yyrule];
-  YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
+  unsigned long int yylno = yyrline[yyrule];
+  YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu), ",
              yyrule - 1, yylno);
   /* Print the symbols being reduced, and their result.  */
   for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
-    YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
-  YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
+    YYFPRINTF (stderr, "%s ", yytname[yyrhs[yyi]]);
+  YYFPRINTF (stderr, "-> %s\n", yytname[yyr1[yyrule]]);
 }
 
 # define YY_REDUCE_PRINT(Rule)		\
@@ -1012,7 +1054,7 @@ int yydebug;
    if the built-in stack extension method is used).
 
    Do not make this value too large; the results are undefined if
-   SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
+   YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
    evaluated with infinite-precision integer arithmetic.  */
 
 #ifndef YYMAXDEPTH
@@ -1036,7 +1078,7 @@ yystrlen (yystr)
      const char *yystr;
 #   endif
 {
-  register const char *yys = yystr;
+  const char *yys = yystr;
 
   while (*yys++ != '\0')
     continue;
@@ -1061,8 +1103,8 @@ yystpcpy (yydest, yysrc)
      const char *yysrc;
 #   endif
 {
-  register char *yyd = yydest;
-  register const char *yys = yysrc;
+  char *yyd = yydest;
+  const char *yys = yysrc;
 
   while ((*yyd++ = *yys++) != '\0')
     continue;
@@ -1072,7 +1114,55 @@ yystpcpy (yydest, yysrc)
 #  endif
 # endif
 
-#endif /* !YYERROR_VERBOSE */
+# ifndef yytnamerr
+/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
+   quotes and backslashes, so that it's suitable for yyerror.  The
+   heuristic is that double-quoting is unnecessary unless the string
+   contains an apostrophe, a comma, or backslash (other than
+   backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
+   null, do not copy; instead, return the length of what the result
+   would have been.  */
+static YYSIZE_T
+yytnamerr (char *yyres, const char *yystr)
+{
+  if (*yystr == '"')
+    {
+      size_t yyn = 0;
+      char const *yyp = yystr;
+
+      for (;;)
+	switch (*++yyp)
+	  {
+	  case '\'':
+	  case ',':
+	    goto do_not_strip_quotes;
+
+	  case '\\':
+	    if (*++yyp != '\\')
+	      goto do_not_strip_quotes;
+	    /* Fall through.  */
+	  default:
+	    if (yyres)
+	      yyres[yyn] = *yyp;
+	    yyn++;
+	    break;
+
+	  case '"':
+	    if (yyres)
+	      yyres[yyn] = '\0';
+	    return yyn;
+	  }
+    do_not_strip_quotes: ;
+    }
+
+  if (! yyres)
+    return yystrlen (yystr);
+
+  return yystpcpy (yyres, yystr) - yyres;
+}
+# endif
+
+#endif /* YYERROR_VERBOSE */
 
 
 
@@ -1197,8 +1287,8 @@ yyparse ()
 #endif
 {
   
-  register int yystate;
-  register int yyn;
+  int yystate;
+  int yyn;
   int yyresult;
   /* Number of tokens to shift before error messages enabled.  */
   int yyerrstatus;
@@ -1216,12 +1306,12 @@ yyparse ()
   /* The state stack.  */
   short int yyssa[YYINITDEPTH];
   short int *yyss = yyssa;
-  register short int *yyssp;
+  short int *yyssp;
 
   /* The semantic value stack.  */
   YYSTYPE yyvsa[YYINITDEPTH];
   YYSTYPE *yyvs = yyvsa;
-  register YYSTYPE *yyvsp;
+  YYSTYPE *yyvsp;
 
 
 
@@ -1253,9 +1343,6 @@ yyparse ()
   yyssp = yyss;
   yyvsp = yyvs;
 
-
-  yyvsp[0] = yylval;
-
   goto yysetstate;
 
 /*------------------------------------------------------------.
@@ -1288,7 +1375,7 @@ yyparse ()
 	   data in use in that stack, in bytes.  This used to be a
 	   conditional around just the two extra args, but that might
 	   be undefined if yyoverflow is a macro.  */
-	yyoverflow ("parser stack overflow",
+	yyoverflow (YY_("memory exhausted"),
 		    &yyss1, yysize * sizeof (*yyssp),
 		    &yyvs1, yysize * sizeof (*yyvsp),
 
@@ -1299,11 +1386,11 @@ yyparse ()
       }
 #else /* no yyoverflow */
 # ifndef YYSTACK_RELOCATE
-      goto yyoverflowlab;
+      goto yyexhaustedlab;
 # else
       /* Extend the stack our own way.  */
       if (YYMAXDEPTH <= yystacksize)
-	goto yyoverflowlab;
+	goto yyexhaustedlab;
       yystacksize *= 2;
       if (YYMAXDEPTH < yystacksize)
 	yystacksize = YYMAXDEPTH;
@@ -1313,7 +1400,7 @@ yyparse ()
 	union yyalloc *yyptr =
 	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
 	if (! yyptr)
-	  goto yyoverflowlab;
+	  goto yyexhaustedlab;
 	YYSTACK_RELOCATE (yyss);
 	YYSTACK_RELOCATE (yyvs);
 
@@ -2143,10 +2230,11 @@ yyreduce:
     break;
 
 
+      default: break;
     }
 
-/* Line 1037 of yacc.c.  */
-#line 2150 "parse.c"
+/* Line 1126 of yacc.c.  */
+#line 2238 "parse.c"
 
   yyvsp -= yylen;
   yyssp -= yylen;
@@ -2185,12 +2273,36 @@ yyerrlab:
 
       if (YYPACT_NINF < yyn && yyn < YYLAST)
 	{
-	  YYSIZE_T yysize = 0;
 	  int yytype = YYTRANSLATE (yychar);
-	  const char* yyprefix;
-	  char *yymsg;
+	  YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
+	  YYSIZE_T yysize = yysize0;
+	  YYSIZE_T yysize1;
+	  int yysize_overflow = 0;
+	  char *yymsg = 0;
+#	  define YYERROR_VERBOSE_ARGS_MAXIMUM 5
+	  char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
 	  int yyx;
 
+#if 0
+	  /* This is so xgettext sees the translatable formats that are
+	     constructed on the fly.  */
+	  YY_("syntax error, unexpected %s");
+	  YY_("syntax error, unexpected %s, expecting %s");
+	  YY_("syntax error, unexpected %s, expecting %s or %s");
+	  YY_("syntax error, unexpected %s, expecting %s or %s or %s");
+	  YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
+#endif
+	  char *yyfmt;
+	  char const *yyf;
+	  static char const yyunexpected[] = "syntax error, unexpected %s";
+	  static char const yyexpecting[] = ", expecting %s";
+	  static char const yyor[] = " or %s";
+	  char yyformat[sizeof yyunexpected
+			+ sizeof yyexpecting - 1
+			+ ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
+			   * (sizeof yyor - 1))];
+	  char const *yyprefix = yyexpecting;
+
 	  /* Start YYX at -YYN if negative to avoid negative indexes in
 	     YYCHECK.  */
 	  int yyxbegin = yyn < 0 ? -yyn : 0;
@@ -2198,48 +2310,68 @@ yyerrlab:
 	  /* Stay within bounds of both yycheck and yytname.  */
 	  int yychecklim = YYLAST - yyn;
 	  int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
-	  int yycount = 0;
+	  int yycount = 1;
+
+	  yyarg[0] = yytname[yytype];
+	  yyfmt = yystpcpy (yyformat, yyunexpected);
 
-	  yyprefix = ", expecting ";
 	  for (yyx = yyxbegin; yyx < yyxend; ++yyx)
 	    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
 	      {
-		yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]);
-		yycount += 1;
-		if (yycount == 5)
+		if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
 		  {
-		    yysize = 0;
+		    yycount = 1;
+		    yysize = yysize0;
+		    yyformat[sizeof yyunexpected - 1] = '\0';
 		    break;
 		  }
+		yyarg[yycount++] = yytname[yyx];
+		yysize1 = yysize + yytnamerr (0, yytname[yyx]);
+		yysize_overflow |= yysize1 < yysize;
+		yysize = yysize1;
+		yyfmt = yystpcpy (yyfmt, yyprefix);
+		yyprefix = yyor;
 	      }
-	  yysize += (sizeof ("syntax error, unexpected ")
-		     + yystrlen (yytname[yytype]));
-	  yymsg = (char *) YYSTACK_ALLOC (yysize);
-	  if (yymsg != 0)
-	    {
-	      char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");
-	      yyp = yystpcpy (yyp, yytname[yytype]);
 
-	      if (yycount < 5)
+	  yyf = YY_(yyformat);
+	  yysize1 = yysize + yystrlen (yyf);
+	  yysize_overflow |= yysize1 < yysize;
+	  yysize = yysize1;
+
+	  if (!yysize_overflow && yysize <= YYSTACK_ALLOC_MAXIMUM)
+	    yymsg = (char *) YYSTACK_ALLOC (yysize);
+	  if (yymsg)
+	    {
+	      /* Avoid sprintf, as that infringes on the user's name space.
+		 Don't have undefined behavior even if the translation
+		 produced a string with the wrong number of "%s"s.  */
+	      char *yyp = yymsg;
+	      int yyi = 0;
+	      while ((*yyp = *yyf))
 		{
-		  yyprefix = ", expecting ";
-		  for (yyx = yyxbegin; yyx < yyxend; ++yyx)
-		    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
-		      {
-			yyp = yystpcpy (yyp, yyprefix);
-			yyp = yystpcpy (yyp, yytname[yyx]);
-			yyprefix = " or ";
-		      }
+		  if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
+		    {
+		      yyp += yytnamerr (yyp, yyarg[yyi++]);
+		      yyf += 2;
+		    }
+		  else
+		    {
+		      yyp++;
+		      yyf++;
+		    }
 		}
 	      yyerror (yymsg);
 	      YYSTACK_FREE (yymsg);
 	    }
 	  else
-	    yyerror ("syntax error; also virtual memory exhausted");
+	    {
+	      yyerror (YY_("syntax error"));
+	      goto yyexhaustedlab;
+	    }
 	}
       else
 #endif /* YYERROR_VERBOSE */
-	yyerror ("syntax error");
+	yyerror (YY_("syntax error"));
     }
 
 
@@ -2251,18 +2383,9 @@ yyerrlab:
 
       if (yychar <= YYEOF)
         {
-          /* If at end of input, pop the error token,
-	     then the rest of the stack, then return failure.  */
+	  /* Return failure if at end of input.  */
 	  if (yychar == YYEOF)
-	     for (;;)
-	       {
-
-		 YYPOPSTACK;
-		 if (yyssp == yyss)
-		   YYABORT;
-		 yydestruct ("Error: popping",
-                             yystos[*yyssp], yyvsp);
-	       }
+	    YYABORT;
         }
       else
 	{
@@ -2281,12 +2404,11 @@ yyerrlab:
 `---------------------------------------------------*/
 yyerrorlab:
 
-#ifdef __GNUC__
-  /* Pacify GCC when the user code never invokes YYERROR and the label
-     yyerrorlab therefore never appears in user code.  */
+  /* Pacify compilers like GCC when the user code never invokes
+     YYERROR and the label yyerrorlab therefore never appears in user
+     code.  */
   if (0)
      goto yyerrorlab;
-#endif
 
 yyvsp -= yylen;
   yyssp -= yylen;
@@ -2349,23 +2471,29 @@ yyacceptlab:
 | yyabortlab -- YYABORT comes here.  |
 `-----------------------------------*/
 yyabortlab:
-  yydestruct ("Error: discarding lookahead",
-              yytoken, &yylval);
-  yychar = YYEMPTY;
   yyresult = 1;
   goto yyreturn;
 
 #ifndef yyoverflow
-/*----------------------------------------------.
-| yyoverflowlab -- parser overflow comes here.  |
-`----------------------------------------------*/
-yyoverflowlab:
-  yyerror ("parser stack overflow");
+/*-------------------------------------------------.
+| yyexhaustedlab -- memory exhaustion comes here.  |
+`-------------------------------------------------*/
+yyexhaustedlab:
+  yyerror (YY_("memory exhausted"));
   yyresult = 2;
   /* Fall through.  */
 #endif
 
 yyreturn:
+  if (yychar != YYEOF && yychar != YYEMPTY)
+     yydestruct ("Cleanup: discarding lookahead",
+		 yytoken, &yylval);
+  while (yyssp != yyss)
+    {
+      yydestruct ("Cleanup: popping",
+		  yystos[*yyssp], yyvsp);
+      YYPOPSTACK;
+    }
 #ifndef yyoverflow
   if (yyss != yyssa)
     YYSTACK_FREE (yyss);